Celery/Kombu ignoring run_every

Question

I'm kombu/celery setup that I've recently deployed. The tasks execute fine, but appear to run almost continuously rather than respecting the run_every attribute. Perhaps more oddly, this behavior only appears in production and works fine locally.

My tasks.py looks like this:

from celery.task import  PeriodicTask
from datetime import timedelta, datetime

class FirstTask(PeriodicTask):
    run_every = timedelta(seconds = 30)
    # Do Stuff    

My settings.py includes

BROKER_URL = "django://"

import djcelery  
djcelery.setup_loader() 

plus 'djcelery' and 'kombu.transport.django'in INSTALLED_APPS.

And in production I run python manage.py celeryd -v 2 -B -s celery -E -l INFO to start running my tasks. I had been following Chase Seibert's tutorial if that clears anything else up.

Answer 1

How long does the task take to finish? And have you tried clearing your queue before trying it again (celery might not respect the run_every setting, if you have already tasks in your queue...)

Answer 2

why do you include 'kombu.transport.django' in your INSTALLED_APPS..? I thought celery and kombu are providing the same functionality.